Carriage-threading device



D. BLYDENBURGH.

CARRIAGE THREADING DEVICE. APPLiCATlON FILED JAN 2, 1919.

Patented May 4, 1920.

2 SHEETS SHEET I.

D. BLYDENBURGH.

CARRIAGE THREADING DEVICE.

APPUCATION FILED JAN. 2,1919. v

1,338,809. Patented May 4, 1920.

v 2 SHEETS-SHEET 2.

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M72701, Jam e2 2110 02 Zury ing at UNITED DANIEL BLYDENBUBGH, OF SOUTH ATTLEBORO, MASSACHUSETTS.

CARRIAGE-THREADING DEVICE.

To all whom it may concern:

Be it known that I, DANIEL BLYDE 1\T- BURGH, a citizen of the United States, resld- South Attleboro, county of Bristol, and State of Massachusetts, have invented certain new and useful Improvements .in

Carriage-Threading Devices, of which the following is a specification.

My invention relates to carriage threading devices, that is, to devices especially adapted for threading the carriages of lace making machines. I

A carriage for a lace making machine comprises -a thin metal plate of general triangular form and provided witha large circular opening to receive the bobbin and an eye to receive the thread from the bobbin. The bobbincomprises two thin disks spaced slightly apart to receive the thread between them,and is held in place in an aperturein the carriage by means of a flange projecting inwardly from the periphery of the aforementioned aperture for substantially half its circumference, and a spring pressed detent substantially diametrically opposite said flange. A lace making machine usually contains several thousands of these carriages, and to insert the freshly filled bobbins and thread the eye of the carriage. in theusual manner consumes considerable time. carriages per 86 form no portion of my invention, but it is necessary to referto the same-and their construction in order to fully understand the device forming the subject matter of the present invention and its opv eration.

The objectof my invention is to provide a simple, manually operable .device to facilitate placingthe bobbin in the carriage and threading the eye of the carriage. Afurther object of my invention is to provide a device as mentioned which may be readily adjusted to the convenience of the operator, and also capable of adjustment toefi'ectually thread the carriages. Other objects will appear hereinafter.

With these objects in view, my invention consists generally in a suitable base, ,a pivotally mounted table to receive the carriage to be threaded and provided with stops to properly position the carriagethereon, and

a .llook. adapted to pass through the eye of Specification of Letters Patent.

{The v Patented May 4, 1920.

Application filed January 2, 1919. Serial No. 269,181.

the carriage when the table is tilted. My

invention further consists in a device as mentioned further characterized by such construction as will permit of the hook being adjusted with relation to the table so as to insure the hook passing freely through the carriage eye. My invention further consists in a device as mentioned further characterized by certain depressions in the table whereby the threaded carriage may be read ily withdrawn therefrom without danger of cutting or injuring the thread which has been threaded through the carriage eye. My invention further consists in variousdetails of construction and. arrangements of parts all as will be fully described hereinafter and particularly pointed out in the claims.

My invention will be more readily under stood by reference to the accompanying drawings forming a part of this specification, and in which- Figure 1 is an elevation of a carriage threading device embodying my invention. Fig. 2 is a plan viewv of the same.

Fig. 3 is an elevation of the device at substantially right angles to Fig. 1, partially in section. I

.Fig. 1 is a detail section on substantially the line 1-4: of Fig. 3.

Fig. 5 is a plan view of a carriage of a. lace making machine such as is adapted to be threaded by the threading device.

Flg. 6 is a detail section on the line 6-6 of '5, upon an enlarged scale, and

Flg. 7 is a similar sectionon the line 77 of Fig. 5, also upon an enlarged scale.

Referring now to the drawings, 10 indicates the base of the device, which comprises a cylindrical sleeve 11 and a base flange '12, preferably connected by a flared or conical portion 13. The flange 1:2 is provided with apertures 14: to receive securing devices for ifastenlng the devlce to a board or table.

through the head. 27,27 indicate cotter pins extending through the pivot pin 26. The ears are each provided with a peripheral aperture 25, the end walls of which form stops to engage a pin 17 on the head 17 to limit the swing of the carriage.

The carriage is substantially triangular in form and is provided with a pair of lugs 28, the adjacent faces of which are anguv larly disposed to receive the carriage between them, the angular disposition being such as to conform to the sides of the carr1age., By this construction the carriage is readily positioned accurately upon the table by merely sliding the same into position of engagement with said lugs. The carriage is formed with a large centrally disposed aperture 29 and with longitudinally disposed depressions or grooves 30 in alinement upon opposite sides of the said aperture, for purposes hereinafter described.

The carriage illustrated in Figs. 5, 6 and 7 forms no part of the present invention per 86, but is illustrated and described in order to get a perfect understanding of the operation of the threading device. 31 indicates the carriage proper which comprises a thin metal plate of a general triangular shape, as shown in Fig. 5, and provided with a central aperture 32 to receive the bobbin 33. The bobbin comprises two plates 34 spaced apart to receivethe thread 35 be tween them. Projecting inwardly from substantially onehalf the circumference of the aperture 32 is a flange 36 formed by reducing the thickness of the carriage plate, and adapted to be received between the edges of the plates 34 of the bobbin. Sub stantially diametrically opposed to the flange 34: is a spring-pressed detent 37 which also engages between the plates 34, said detent and flange 36 serving to hold the bobbin in the carriage. 38 indicates the eye of the carriage and 39 a groove extend ing substantially tangentially to the periphcry of the bobbin and through which the thread passes from the bobbin to the eye beneath the plane of the surface of the carriage. As above stated, the primary object of the present invention is to provide a device to facilitate placing a newly filled bobbin 33 within the carriage 31 and to thread the thread from the bobbin through the eye 38 of the carriage.

The operation of the device is as follows: An empty carriage is placed upon the table 24 and slid into position, that is, until its sides firmly engage the lugs 28. A bobbin 34 is then placed within the aperture 32' of the carriage and moved by the operator untilthe flange 36 engages between the edges of the plates 34. This is readily accomplished as access is given .to the under side of the bobbin through the aperture 29 in the table. The portion of the carriage and bobbin containing the spring detent projects beyond the table, as illustrated in dotted lines in Fig. 2, so that the said detent may be readily positioned after the bobbin has been positioned within the'carr-iage. The operator then, holding the carriage firmly on the table with one'hand and the end of the thread in the other hand, rocks the table until the hook 22 passes through the eye 38 of the carriage; then engages the thread under said hook and returns the carriage to normal position, the hook drawing the thread through the eye. The carriage is then removed by drawing the same backwardly from the lugs 28, the

depression 30 being provided to prevent the table from cutting or injuring the thread projecting from the bobbin side of the carriage during the removal of the same from the table. It is obvious that the idea of angular position of the table may be regulated to suit the convenience of the operator and held in adjusted position by means of the screw 16, and also that the hook 22 may I claim v 71 1. A device of the class described comprising a fixed hook, a pivotally mounted -be readily positioned to properly enterthe eye by means of the construction described;

table, and means on said table for positioning the carriage thereon, substantially as described. 2

2. A device as set forth in claim 1 further characterized by means for limiting the swing of the table.

' 3. A device as set forth in claim 1 further characterized by a longitudinally disposed thread-receiving depression therein.

4. A device of the class described comon said head, a needle supported by said In testimony whereof I have signed my head, and means for positioning a carriage name to this specification in the presence on said table, substantially as described. of two subscribing Witnesses.

7. A device as set forth in claim 6 further DANIEL BLYDENBURG. 5 characterized by means for adjusting said Witnesses:

needle With relation to said table, substan CHARLES NORMAN TURNER,

tially as described. S. MAY NIXON. 

